21888656

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80473}}^1$

素因数の和:80498

約数の個数: 20

約数和(自身を含む): 44904492

約数和(自身を除く): 23015836

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80473, 160946, 321892, 643784, 1287568, 1368041, 2736082, 5472164, 10944328, 21888656]

約数ペア:

[(1, 21888656), (2, 10944328), (4, 5472164), (8, 2736082), (16, 1368041), (17, 1287568), (34, 643784), (68, 321892), (136, 160946), (272, 80473)]